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| author | Steven Rostedt <srostedt@redhat.com> | 2009-06-02 20:01:19 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2009-06-02 20:42:17 +0200 |
| commit | 26c01624a2a40f8a4ddf6449b65c9b1c418d0e72 (patch) | |
| tree | eeff81aa0fa56ba1f2c180d4ec6e64cb31af898e /kernel/trace/trace_functions_graph.c | |
| parent | function-graph: enable the stack after initialization of other variables (diff) | |
| download | linux-26c01624a2a40f8a4ddf6449b65c9b1c418d0e72.tar.xz linux-26c01624a2a40f8a4ddf6449b65c9b1c418d0e72.zip | |
function-graph: add memory barriers for accessing task's ret_stack
The code that handles the tasks ret_stack allocation for every task
assumes that only an interrupt can cause issues (even though interrupts
are disabled).
In reality, the code is allocating the ret_stack for tasks that may be
running on other CPUs and there are not efficient memory barriers to
handle this case.
[ Impact: prevent crash due to using of uninitialized ret_stack variables ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_functions_graph.c')
0 files changed, 0 insertions, 0 deletions